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I've an SSS light on my cadillac escalade EXT. I've bought…

Customer Question

Hi Jerry, I've an SSS light...

Hi Jerry,I've an SSS light on my cadillac escalade EXT. I've bought this car 6 months ago with SSS and ABS service. After changing DOT, cleaning brakes, ABS has disappeared but not SSS..I was on holiday in USA this in December and I've bought an INOVA 3150 OBD. It indicates C0285, so I've bought on Amazon this sensor and have changed it this morning but still have the message. I've bought an Steering wheel position sensor too...Maybe Must change it ? It needs to be initialized ?( because we have no official dealers in France...so, no official Obd's..)

Hello, thanks for that information. I wanted to make sure that was the part that was replaced as GM had released a bulletin on this code being set to replace that part and you did, in fact, replace it with the updated part number. This indicates the bulletin did not repair this fault.

This means the Brake pressure modulator valve itself may be faulty internally and needs to be replaced or that there may be a wiring issue leading to the modulator assembly or this switch itself.

In order to find out for sure which is the cause, the complete diagnostic test procedure has to be followed to pinpoint the issue. I will post this procedure below for you to see it. It will need to be followed and tested completely to then be able to pinpoint this issue.

The steering wheel position sensor was a common component that can fail but in most all cases it will set a fault code when it fails. There is a chance it has failed but has not set a fault code for it being faulty.

The code that you have listed indicates the modulator at fault or a possible wiring issue or the switch itself at fault.

Now if the steering wheel position sensor is sending false signals that the computer thinks are the correct signals, there is a slight chance it is causing this code and issue your seeing. You can have the position sensor replaced if you want and then calibrated and the codes cleared out to see if it resolves the issue. If it does not then the diagnostic test procedure I posted in the link above will, unfortunately, have to be followed to be able to pinpoint the cause and then repaired from there to resolve it.

Thanks, Pete

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Customer reply replied 2 months ago

Hi Pete, just tried my car on a big wet field. SS doesn't work with light on and work when I put the default off with my OBD. Something's funny...ABS doesn't work ( with or without SS default ) and I have no light on...So, I 'm gonna buy a BCM and try. Amazon or Rockauto asks for an Y91 option. I've got it on the stamp ( glove box). What is this option ??

This code may be set due to an issue with the Yaw rate sensor. You will have to follow the below diagnostic chart in the link provided to help pinpoint if the yaw rate sensor has to be replaced or if there is another component at fault.

Unfortunately it will require a Tech 2 or a fully compatible scan tool to perform the testing to pinpoint the issue.

Thanks Pete

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Customer reply replied 27 days ago

Hi, I've finally found a tech2 (incredible).I've made the bleeding procedure ( not done since I've changed the ABS module) and I've ordered a yaw rate sensor to be sure that it works. Unfortunately, When I'm gone, the stability system has nearly stopped the car after turning ont the right at slow speed ( as if I was driving on snow). Tech2 for a second time and I've found others codes . C0212 ( we know what it is),B022 ( I've an airbag light on). A part to change ?the other code is P1571.Actually, I've removed the ABS fuse because my pump works during 4 or 5 seconds when I begin to drive. I've a problem when I drive slowly . If I touch slowly brakes, ABS works as if I was drifting so I need to pump hard to stop. really dangerous. My front ABS sensors are new.So, do you think that the yaw sensor can be the problem that create the P1571?Is it the same problem with the ABS at low speed ( under 8-9MPH) ?(no ABS light or ABS codes)What about the AIRBAG code ? something to change ?Thanks for answer

I apologize for the delay. I was asleep for the night when you last replied.I am curious here, when you replaced the ABS unit did you replace it with the correct part number and was it programmed to your vehicle?Let me know.Thanks Pete

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Customer reply replied 27 days ago

Hi, new electronic part doesn't exist. We can only find new pump without electronic module. So I've found in Holland the same part that mine ( same option, same references). There was 2 differents abs module for ESC. EXT 02, one without traction control, one with.The pump has goos reactions. When I've bleed with the TECH2 ( not chinese one...A real GM one), everything was working and, at the end of the cycle, the tech2 has indicated No ABS default.But you can answer when you are Ok because we are not on the same GMT

Code P1571 indicates a state of health issue with the PCM ( engine computer ) or the ABS control unit. In order to find out which is at fault here the below diagnostic test procedure will need to be followed to help pinpoint this issue.

Unfortunately, code B022 is not coming up for me here on this being a possible code for this model here.

But the Yaw rate sensor can be the cause for both of these issues here. I recommend diagnosing the Yaw rate sensor fault to see if it needs to be replaced and if it does then I would replace it and clear out all codes to see if any codes come back then.

If you need to continue or if there is anything else I can assist with at all, let me know here and I will be happy to assist further! I will be away starting Sunday, through Tuesday. If you reply during those days, my internet access and access to vehicle information will be limited, but I will respond back as soon as I can on those days.

Code B0022 will set when a fault is detected with the steering wheel module deployment loop. I would say in most cases this is the steering column contact coil that seats under the steering wheel. In order to pinpoint this code for the airbag fault the below diagnostic testing procedure would need to be performed.

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.